1. Use Android Studio to create a new project prompt whether to check use legacy android.support libraries
use legacy android.support libraries (check this box, it means you want to use the abandoned support library)
using legacy android support libraries, will prevent you from using the latest Play Services and jetpack libraries. (using legacy android support libraries, will prevent you from using the latest Play Services and jetpack libraries)
2. At present, the newly developed projects generally do not check this box. Android abandons the support library and uses AndroidX instead.
So we don't need to check this box!
So we don't need to check this box!
So we don't need to check this box!